.video .nav {
  position: fixed;
  left: 0;
  right: 0;
  top: 4rem;
  background-color: #fff;
  z-index: 1000;
  width: 100%;
  overflow-x: scroll;
  white-space: nowrap;
  padding-left: 1rem;
  border-bottom: 0.1rem solid #f4f4f4;
}
.video .nav .nav-li {
  display: inline-block;
  padding: 1rem 0.5rem;
  font-size: 1.2rem;
  color: #333;
  position: relative;
}
.video .nav .nav-li.curActive {
  color: #E82202;
}
.video .nav .nav-li.curActive::after {
  position: absolute;
  content: '';
  bottom: 0;
  left: 0;
  width: 2rem;
  height: 0.2rem;
  background-color: #E82202;
  border-radius: 0.2rem;
}
